Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5b928d95abb8738fafedd7f38575119a662efb3d36d4f31b085af055ab32e2a2' 
  AND token = 'iaR6T+/suPU72I5NaP8liT4PQbA34BwUHa+iw6zCq+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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