Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba1a6e7866b0b0ea1b6a28bc0c645c2ccf6e20fa73aa0099f36de63ce8a7c700' 
  AND token = '/LsuBWHs1Lpi2wo/XHhIbSHBEW7ssQ7JXVE91gfKyp0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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