Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95842dc6acb782712e18790580fd35e5db1efd9fc8124da25c806d7883888c8a' 
  AND token = 'X3Gj6/nnb1YM1uCIZOityix/MLVcMcLaqQDuhTGHQRY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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