Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b550f95a4e034a5a99074d230567afb2bcd9a7bc71b32f92f3f4f26e863e2a05' 
  AND token = 's3V1PKWKTrcV6afx+77kdGOsgxrxKz5XjBRSs9w5w5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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