Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f54089778e6100159dd977ac285ece80f209f89d4a5d19b3af169fb50467a01c' 
  AND token = 'eQLXXcwFacfGzhCl1MoHj9QUNw5XgNc3zcnNgFg8U4k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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