SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '114a2f27bc980e715a2e0a1306b81fb7fc16a27d1c5eb144e8fa5ae5bc94d90c' 
  AND token = 'qW30OApZJYsORDVK/gJLE0A5kEPQ1o8eXHazhwh4//k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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