Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'aa50593d5eaab9663a6880c335563f2bad932b4c6be01e011b559de7c2bff0cf' 
  AND token = 'ZV0S+tsXWHRK67B1M+xsMv+HdKw+SWNdGLxptHHwccE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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