Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd16c82c5a07e6709f6e084c19bf050b691047c7e8163bb1f7b51011b81f9b54b' 
  AND token = 'PRIKxb+5oKnhsT0qPDdlttKdmsZyT+I+l6vnStmAvWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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