Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29bb36716a07b551c6783d74d6dedb6cc2fbd3f2083acf7c435f3dfbdce1e7b6' 
  AND token = 'mxC/HIeaj0LU2EPBJnlaVNLP90McJcZQUs9Sa5Tf10Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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