Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a7c14007761f47fff19eb015fdc84fac2301c6d8956bebad49e11f93fd3ad8f3' 
  AND token = '4TuPQYp3E2OAHcKgt54koRuY00YU/Y1tO+k+x3MHf9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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