Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '121f7d2767cf61f6ec1ff7a37fc7173f4b7f1078b98cf0129537e0c953992dec' 
  AND token = 'aLJOfxL2P30iAINPkpolVigN01qbvvSm1ZfQ68L08oE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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