Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f0d442f8cb4da765ef193d5ccfaf278da1aa6b0fe6ab24a01e2636765704bf2' 
  AND token = '31VXPifccD8G1rtOQm5yAaMsc35hFFDT7EMiMSu/lb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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