Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '747cd1b367175522c24d14082602971fe0b5a215561da52e4fd990bcf9bc542e' 
  AND token = 'vEJRIYlJJn9gTf/O1O7jAe8SEXBK7AbClIlMB6RFELI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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