Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04d19fa2c240303ad7bb430576ba0fbe984cd4d32b2b92612d4daf7e28da9f7e' 
  AND token = 'tayswKI8bZmYit3oJN40EUEqMhBmOqugO7Ey+uSfIec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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