Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1786211a5aed28ef170833cac0b17a6244cebeeef7f32ea7f093840c5a46827e' 
  AND token = 'Dv5Xn1sLqEOq82T0xkhpcTiN30mlCEyUSGSsQpYHqOs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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