Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ceca033b7422c1027de3979abc239598f0ead508d764420fa68d223e652b8b1' 
  AND token = 'qq9jVYGbp4g3jZaE64RfO3S12BH1IDJv1N97Qg7I8vc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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