Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '3d76f4dd50b284a7462c4cfc794a7b30eb9ec0dc45070f97a7064b79747ce4c8' 
  AND token = 'qFdxteHrk5JEujSUIGEf+dY1L4kdI5lcp0SbqdtWn20=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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