Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c317ede64dd9f25018521d9c6e4f4383590cab77ad2029591e5f9f3ab1c9e776' 
  AND token = 'BE3jbx2f6JEaDY80pl8sui1VN70lpn97oOdWUSiBEbg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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