Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f6a430b02b31f56525d76ac7c2a5dccac5be88093ef43693aeda6a7739e3e05' 
  AND token = 's8RNLwwlD7WzifWLMfzEPZJ0adgsbLFzrRcdd0gIKn0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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