Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77781af612afccdec9db72847b9ccaed370d92c2598cf5226835ee3e87cc4e3c' 
  AND token = 'LNU/hvRURdRodGm1pf3pN7zMFkJRA1nP9JCg6LmwShQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}