Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd32063b4ff2348edaf7256833b70783bc67eca292a6574449053f41e243dfb7b' 
  AND token = 'etn6LeRq/AJf+BZmj8MzW7uX4eSA1i7Gi4/TCui0FEE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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