Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7495132cf344a61d01974ea973641e5a9a80c30797f603f8d5fc2ffcf7eae056' 
  AND token = 'toDy+aqriakzc0gOYkTRzuidH0F9D6IjqFtQ4AcRs98=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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