Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'cdeec57345d829787413f4fe9e4be0790a740e869ff098ae6a084a62f630b464' 
  AND token = 'iX88JpjyMzlCEmaOv8mJIqgIvWoXAFgTjvv0ekIUHO0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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