Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd764277e2aefdff48defae73219c95a4ffd733d044f5d595989b898de9641617' 
  AND token = 'K0nfoGflDQQrIQP1BWPxtu0OIFdqWK6v6ectbz6PN/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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