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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61e30da66f6806aa17747b97e0bb3c4ac54ff0e7f1ae67d5d39f17ae542e3148' 
  AND token = 'dDpMFgKriHTxZos5i/uP4GYJ9ZvWqodxynAe1JjETy4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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