Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd33566545e40aadfaa67427823e4b83ead734e51f1446d0492ae22000869a88' 
  AND token = 'CWkq9ancQDMTLek+DyWMFOjxVMw8U6tA36R4xeR52qw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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