Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01365631dba7c240557c123749210400910db69fd74c55fd6c5a80b833f95bc4' 
  AND token = '+RqFDhudtcfECnW72F4nvzNBOrToSPV+mkwry79RN/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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