Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a373619089d56e06549f072d0676086b347f0075a3b2d1c0fd767d8d433bfa75' 
  AND token = 'BZleHaS4NnGDgWYgaZyrX/cb6pBunwgqTxWZ8IQJq4A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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