SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e32f4fe8f3575a2e82f90697415e9b7165bc9434a19cd3a3d024a733727135d6' 
  AND token = 'paJ8zW0XgleIvu4Gh37PovjewmSN50UisLa7NUhKOP4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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