Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edc4909774321feb90acf455e6e25441a7f9f541abb2a20e1173dba89be8585a' 
  AND token = 'JT+3qFBNqT2CAJNntWVFxgGBp9yF/qLdrF++aYBreOE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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