Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '2f761bfb9e0f08915dc3fa83c34101d2264585ae0163807490a01c63ece42b28' 
  AND token = 'O79wc5apspjANgWeCzEoNIw2NljFFPyl6I+7LxlN2Es=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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