SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '48fc6c2a3f580c1e50b886a89fe7cd2a46dfe86d9f2317701673a94b35936eab' 
  AND token = 'irG/sLHTYjydEDV1JmzNRCRcDBeIpwVl5hPjhMJV9fk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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