Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32dca0f538a28951b01ff7d8df8238f0f040424d8fea8e3a8fbb3c2ab8ecc34d' 
  AND token = 'cmNCxyqmmH+gDdzDo/ILfT6HlBRvtUsHqDnWc6FPmJE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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