Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0dab498b36ac28db4ebcb9c3cec45e75eb48435fc04e25fc2f8e4c11db008ce' 
  AND token = 'T6KE9GJxpy0OT3ErjYjY6fg6CU73J/GXHdlUuJbtQaY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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