Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fefe1e2ffa02848932c16c995cb6cc91930766fe5cb69af63e1ff019574b1b2a' 
  AND token = 'Gm1U8QbzMXfqzKuMcA5yG2jU9XTXT3TD66/giko7cwE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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