Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '723d353ca752b07b1436ea4eaa8de74b1943ae166eb10d69d40ebc603e95362a' 
  AND token = 'ZvzoCk3fF6hitrd0pPEJLRmN5naBWchiv9RQGS7MRoM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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