Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9547857b589ac6fa0dc106068cb579cc0683a582d53258cf2e966b976e063cc0' 
  AND token = 'XF1sQD/AHcJEf6APiFBhwHAk73XP9nUTM+gZUnUHA4M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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