Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'a3d6900582b411f7d1131bc0c7f25ac04232a4c41743410a9af6b9a0d813e8d7' 
  AND token = '09xISGQeMIOJkyxhX6RxyzfmZJn6lRO0U14Fd2EWrIA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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