Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa67939ebb76ae9fe48da76e57df3cca9cabb2b785e144ee05408f20130d4f8d' 
  AND token = 'Utw68fbOTGYb1HJcJnKQoOkIafGxhiMTp5XTRTgQmNs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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