Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '59144c67ff9c39ee18914162fa2fc5db7e81a4f8cf938a03b6c7d3050dcb89ea' 
  AND token = 'i47zBB2+YRwDpuFKCebfK3eDQ0+k18QDCvw5cyTDtLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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