Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dbec133883c35982f224e7e4e5f8c499001e9e707510f134b3054552486cc5b2' 
  AND token = 'iyJuyWQIt/WCjcs42djHolz5e4el8HcH/eLcqMMsRqY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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