Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2a52b4abbdf3e7898133b724d554cac44f2b3fd7d9bf5eaae7960fc4b92f4afa' 
  AND token = 'ZTWkueO4MvnQUFYFzgu4bKqXEZgpeKutGlXN8MlSX3o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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