Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7a105b119aed3a1527bfcf1893cea5447bc0d549f4f7d2864e100cdee9a6c07' 
  AND token = '38FNRlWlLf/mKc57Uc5OMgm1CA56Py1QIbPmztru3ho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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