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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c76f4b19cd2d83d13e7081c2809fd35315d7bd7b4b2834b7bb00b40581ca89a' 
  AND token = 'VEvFOIx+I9o5iFxB1KUyROdKm2Le69J16IoI2LexT68=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}