Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '54d84626cdc970db759cee0396900029fe9a8bff021020ced1fe8f9d4729a296' 
  AND token = 'pugsjfhDc1rmghxDadmJ25eMqNXK7z0kdIOMvR9yb2s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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