Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e16991d20381b069bf2e38fb3705242206a56559010c766e152f994d9e2d425f' 
  AND token = 'U1f12dIrEHz5G0rt9zcR2TE50BpdSCJSnMi7JhDrwZs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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