Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2cfb1f39d4fd6cff68dfdef49c61dcef7c14b5134a0a4611d8fc70af7d22856' 
  AND token = 'y04864lZfrwB4gffktA1H1T5P1hGzOxJr7J36XXt87Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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