Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b046c2fe5f22d4c0acabad68e9a2dc31e66af2f938d5881c7644a04c8941924' 
  AND token = 'TSZB6zIOYX5B4X2UdZc67MzUJiSIAMIjy45dE6olj/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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