Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edc44811a7809e3d6333369d9885fd9adaac904afe4325412b0ba9620d66cf31' 
  AND token = 'axWDHsDg8IqV+cZXcqdBxyeMpBsa6rkk+v8+eN3r9T4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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