Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c529d201ddde21382cc4a8a41998290fc226fbfe79a647c11c29e3f03f04f4d4' 
  AND token = 'xrK2Lj2CrEwnHBLcU2hMwFE8IdicjnYxHChvnkwZScc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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