Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00ceed3e622786ef55c24ce392b1d08b0d18aac90fdc12afb25a2e40a61665d1' 
  AND token = 'eZS7288IZgrHX6IF6ss9XtejRKJAxxgNyIWhVUzy68U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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