Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1d731a949196d4b16db8b6cee2646aacece1d340fa6ec28ec73e7c5f284ca7fd' 
  AND token = 'vrEsio4iGz8MLXmVn+w29MvhTjpknLP9rGCoyONOG08=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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