Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1b34af18cd0a8062bfc3805a325f2cf95908ec743d3f6ae34d35f80ad8029c8' 
  AND token = 'rHF3zLQH3ruaeiSiGFPSVg8k5KavZGGR72s60bgBvRs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00066

JSON explain

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