Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a5e0e84b46c720fa941e7d14ccfb87969a01c9677227e8a21852a23e3f02425' 
  AND token = 'gbhweC/RcdMuWgqwO2e0FGxWOgI3b3HfAj4EdjnysA4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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