SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '104d160101287c5525b34e7948a95300193123f00ade19041c1b5ca4027fbad6' 
  AND token = 'IJHoBglG4KPuuro4h9D9xKZnnQqBNAqEvXG93mwCAf8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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