Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a90442ddf178a7ee0628061e1899ca7860eae3636505bbef978726daf4abf29' 
  AND token = 'i+8OPtOJ0nUw5rvbj0I7ZZKE9Mj+trmULDcMya4Ggb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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