Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dbcefe29fab390c077f5b8da4f475c867e795a6750fa55a0a4e4c734d989286b' 
  AND token = 'LnY5dKvajZh74/l1v4mEpSR95d3Ny/HRzJoJ45Ws+Ec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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