Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '569cb8c4ae71cebe9c822c6c09dda24d627e6a25ede7181436ee74889631e5a9' 
  AND token = 'kdE8fDaNu9HLPwWlARNP206+PhSQV+omUJDARsNwMgU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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