Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4fb6c26cf181ba4fe44307a65286f5335428462744f24b6307070bd7dc0bb2e6' 
  AND token = 'QOp1DSCJ+HDnmeX5R2ySYpIdMSHfC1+TgzI789JHPUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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