Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd54e301a26a5a44ad0c21e4d381004a7eea3fe27290673b5b9119c6d31012226' 
  AND token = '455q0JwL3iBZ8wAWcBwbVgf0yMCX1HZ9o/tiQ86TMDU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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