Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5aa8c322584fd092c8f37d3feebe3efc3624b646011305ad0b73398a59d8d08e' 
  AND token = 'I8nTPg5dizGukN+MmLdRdnG0VFYeD7c+EsbXnuFBteg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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