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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '653c424ae70a46cc46fedc2e8054fc2e1ea80973b7a8e8a59a7d897c21a70709' 
  AND token = 'GjMdv9J3M2pW7Q/q0E1gLQssiyVGCCqeSHo6NNfciqE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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