Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a4d650190293737e0b721668175c03fee24cd217a9b6d70ba07e3d42e9a297d9' 
  AND token = 'FFnV6gVS47odJhATZu9K8+Vh+2jSPk10RsXE7BQ1U1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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