Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73857644993cd117e9332fa681e253a2a527eaa6f79aac278075d5b776058dbc' 
  AND token = 'rnaIdywZwPeb/WEHtui3eKyvnPpDqHUqy1u1ifFyJNE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00073

JSON explain

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