Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e020d1049d0936d74874771699e25cf4a8ae269185b8f38c940d79151935313f' 
  AND token = 'kyPM2MUOi9PYrXZ5RzRcvp3Yi5j+yY0afq+OnrS8J0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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