Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd6e3a30baf955e011a93f6f9b05420d45fc989141fd21099251d2bc47a753bae' 
  AND token = 'WfGyUaWViRCuAqCzMuIeQHcAG3pMhReWB0U+RjlyMJ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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