Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5e9ce68bddc70cb9be211e3ef7148cf39841f2b5d105d2c9981b10200299ca8c' 
  AND token = 'J9unLE5xZQ8Gk9BDHR4iztu5epAqQ8CFkd6NUGnrYoY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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