Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fedbe1be0e7f81c4158f3caf7444666ba50d2f63a47c1c3721df694b82128f67' 
  AND token = 'hOmENkvVGKSgvvE3IHHPpDM6qp3LOVlbe3ND65eu0gs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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