Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'beaa97e642ff9c1c45fde59a3d69688a7cf24474d4cf8201de00f8eec0081f9e' 
  AND token = 'evC2ds7w0OUJlAjkX1EThEV63zsgYpM2puQ1seCtOyY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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