Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2f26f07f20f0739d4ae78d07f609e673b5ce47eb20a7cf198f5c7ce9489f4fc' 
  AND token = 'qwYsNKfWfanFEakxzfSB5m2QPtb4ofeBYXNt194xEEA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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