Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee3c03d110f48250ae3b2e07ee30ad341737339bd954d3929bf6e142a5298bfa' 
  AND token = 'WagnA8YmVF9k9LutNGWMm1v+gvXZUWyRtTFdBjnAoH0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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