Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88f7b20d02a5900ae3e25e696ba4a9e19f7bac4237447bfca6236fe9ce25e14b' 
  AND token = 'R1iExC82L606mK+AUbEkDV0kFKirXbOA2RQ+tHA0by0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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