Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a58e3b12e63554b2048a99764c8ecbfd03ec8c14259d4f954db60d49b5e4b3d3' 
  AND token = 'FCaUmLNrHuuIBuejuKCv65a/BlEDv4afS+R0pp/+gdA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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