Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6ac113cb8ab2c1f4c4a83afcdfbb8b057f948d2b4b75caccae58470c43f2565a' 
  AND token = 'HOVd7DwbGboGykqDcQHIQWpjh2cXweXpSrpwKOH2h5M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00076

JSON explain

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