Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34a69244eede448bf56193ec227f8c6d569795cb610741f7cbea893d7fd88a4e' 
  AND token = 'ntwXJlKLprSxpzRG9p2wFSgoWAre6R2R0q1o4UWUUEA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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