Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c84f2f4083271a1a080ad5f64dec222b3946604a597e19d770540b84261fc64' 
  AND token = '1iDtIJB4d5NmkgccM6T1vki4QIF2GJHJC+3RXZY9Ybg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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