Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41d15f0e8b2d1a54ad8e57f2bab82331fd64b7debcb4e002313d8f7de50ebcd1' 
  AND token = 'Bkw6JXa89QTC72m5aZOjztzbepSUi9IO2V/kjS81nAc=' 
  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"
    }
  }
}