Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'afaf19fa0dd844040dc60a43335d3afba279ae0986a350f348c137678dd5461a' 
  AND token = 'I/0V0ES0dj6OwXxJEl1BxWOEW5poG12J3TBTkNIbOFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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