Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f519e4b07d2dff56b962389318c4016353d0c4a8657e08f1928b86ee7211fe1' 
  AND token = 'C+sRmJmAkwVoT2m05K1kmrLwfXk5d1FA64YXH2WtcTs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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