Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8baecabc5e2f89c532f7199fa3fdef8e00e2fbf9dfa20f90f76f39e353f2e191' 
  AND token = '2RmPasXi4im0LVabIWHJ36OD1QKT2RWYhiNy/oH8W9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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