Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09c636099318eaca8636a478677d1b9b4dab5edbbbf0302a3613f5a056a06a5e' 
  AND token = 'g+yO6hYwaI7xus5FH7Pd+1tW9LWR3OQ9z0gOrRwEpY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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