Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94ffd9c8e5aac64e932c149ae9672f500a77f6922c888310b000bc21f5f5f675' 
  AND token = '+VQWHphsKL7qOALyM0nkahj2D1H5SxgkH7f01vMum7c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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