Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9648af2a1da5f62dc7a35f3fe10804e9eb4e94c5db5170f20f72bde5cc7632ef' 
  AND token = '+NYeSlpcZIsKJCjtFG8S5IIuR0tIJ/eaN33BTkAzwts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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