Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db82317b4a142aec483d2beddf42740ae0baa822a9fc1571d7a4cf142b6130be' 
  AND token = '0K7H8oCJ09lDk9lADZlrni9+tA23HVobWr6m4oKVZGw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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