Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ed8b02f848657308d69f7980c02a02438cba7f9c2106757a6836721379294d07' 
  AND token = '5R6pB1itRkvGWpf6YO5I34E5Dau+LDJdd+sT4D1Lj9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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