Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6e6ddc0584fc74548f1e570671358813bc5f684ef6737681615f32c73f7ec862' 
  AND token = 'gX1U07bEPRR+SVRcuV3A8l1sv2h9OHO7OZoy22rWikY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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