Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24eb11300db217a522c478b4fa62051eff504d42c357c7c4a53c8e77bf19b1b3' 
  AND token = 'WWRCH+xo9o3Dt3rOXKdMJXcrN9Vvc/h2lcYM+p2yIu0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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