Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '094b27e0e38f8f75377e817e4ad855bebf6660b2409ba53d90bf0081cd8d2b3d' 
  AND token = 'uErm2p9zpO/7wJUrf1g1giCGwGcu6VgTn/IoHE7psSw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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