Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7b7e7af680fe8bf0d845ccb92b862c91572db4373bef8de8477f21e9600adc44' 
  AND token = 'fpfoXdSMN57cet8CxoDtAYEFvY2EihQxRIkgejfjaqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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