Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8663a5f810b044a26cae064398e6dd0caa10cb92b69f6ab2edb5e9f2f80e5bf7' 
  AND token = 'HtwTssw64sEaJK3wiiIIKrFtXnxbpmwMAXd633QhL2c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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