Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65835e16ef23c8eec287ba59aa6932a63a2e02e0bd379a4a2b5c37399a9aefb0' 
  AND token = 'Z+DQ1vCHT0TMDoIwBgcmwuCYE3hwLM+Tlzm7cLn/UZc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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