Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5a7af60034ada744321bfdf679b1d236764fd1ed937e2b6f1369a3dfda9c351d' 
  AND token = 'p/tgXqsLxjfR/sgwWF0OihmOLrEQuWv61dNSxN7Ys3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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