Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29d4ec2ad53eb5725419787aa8feba46fc6245a63a6848cc3759b0abbf4b6541' 
  AND token = 'W52T3vE4VyI+U13jg03rk5JgtEV+2Y5fZbgNTRrzfWk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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