Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfb3a6eb788382a369e6dfb9ecabd0c608123588191f03ca806d162591d3185e' 
  AND token = 'xUGal0IaNvkm2h/Qx35I3/VVCDtJkIJbXjZ10i1CPbA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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