Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '995802495bce7217e6bd9f9e501c3752864b75f1e9c4b0072da07b83fd17a6bf' 
  AND token = '8T5PsdvaFUylqdpNXWZa9NwAdk55PzZJnGyAVmFBuns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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