Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fae19788fbd9dd5615b7f2f90ad23ee3a3b2e12195fccbfac7ef201313b9c27e' 
  AND token = 'yVZ6bd4NXI/6wFpdeXT3rhz1tNCAgv6+uQjxzEdGH1M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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