Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '336c4a8a25e4bdb652b868366fe15ec62c9be677dc96282da5c1b2c9b3203ee1' 
  AND token = 'WbcVmdVLlhywvFEthm3poh9MTS0b42M3+7dWVxCpfx0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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